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@emdzej/nfsx-ms45

v0.4.0

Published

MS45 DME flashing helpers — offline CRC-32/MPEG-2 checksum verify/rewrite, RSA-1024 firmware signing, security-access payload builder, and (Stage 2+) SGBD-driven flash session for BMW MS45.0 / MS45.1 engine control units.

Downloads

70

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Links

Git

Maintainers

emdzejemdzej

Keywords

Readme

@emdzej/nfsx-ms45

MS45 DME flashing helpers for BMW E46 (MS45.0) and E60/E65 (MS45.1) engine control units.

Stage 1 (this release) — offline BIN helpers:

  • CRC-32/MPEG-2 verification + recompute for the parameter blob and the dual program checksums that span external flash + MPC flash.
  • RSA-1024 firmware signing for the parameter and program blobs, with MD5 hashing over the segments named in each blob's header.
  • Security-access payload builder (MD5-then-RSA over userID + serialNumber + seed) — the wire-side blob EDIABAS's authentisierung_start job expects.
  • Region tables + segment-header parsers.

Stage 2 (next) — Ms45Session: SGBD-driven identify / read / erase / write / verify orchestration over EmbeddedEdiabas.

Attribution

This package is a clean-room reimplementation of the wire-level behavior and firmware layout documented by:

  • terraphantm/MS45-Flasher — the original open-source MS45 flasher (GPL-3.0). The RSA moduli and private exponents shipped in this package were first published in that project's Checksums_Signatures.cs.
  • hassmaschine — DME disassembly and protocol reverse-engineering.
  • bimmerlabs — ongoing MS45 tuning work.

No source code was copied. Everything here was written from scratch against the wire-level facts (job names, byte layouts, CRC polynomial, address maps, RSA constants) that the referenced projects made public.

License

PolyForm Noncommercial 1.0.0 — inherited from the parent monorepo. See the repository root LICENSE for terms.

Safety

Every write path in this package can brick an MS45 DME. Read the top-level docs/first-flash-runbook.md before running anything that touches an ECU.